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Article

Phenotyping of N-acetyltransferase type 2 and xanthine oxidase with caffeine: when should urine samples be collected?

European journal of clinical pharmacology - 1 Apr 2009

Jetter Alexander, Kinzig Martina, Rodamer Michael, Tomalik-Scharte Dorota, Sörgel Fritz, Fuhr Uwe

Abstract excerpt

OBJECTIVES: Individual activities of N-acetyltransferase 2 (NAT2) and of xanthine oxidase (XO) can be assessed using ratios of urinary caffeine metabolites. We investigated how ratios changed over time and which urine collection interval would be the best for NAT2 and XO activity assessments. METHODS: On two occasions separated by 14 days, 16 healthy male Caucasians collected urine before and 0-2, 2-4, 4-6, 6-8,...

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Methodology Data sources Editorial policy Privacy Delete account & data About Contact Helena Bioinformatics

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Source

Identifiers

PMID: 19082994
DOI: 10.1007/s00228-008-0597-0

Genes

NAT2

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

Related research

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Phenotyping of N-acetyltransferase type 2 and xanthine oxidase with caffeine: when should urine samples be collected?PMID 19082994Read ↗

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